/* 反馈消息样式 */
  .feedback-message {
	position: fixed;
	top: 20px;
	left: 50%;
	transform: translateX(-50%);
	z-index: 1050;
	display: none;
	padding: 12px 20px;
	border-radius: 25px;
	color: #198754;
	background-color: #d1e7dd;
	border: 1px solid #badbcc;
	box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
	align-items: center;
  }
  .feedback-message.error {
	color: #dc3545;
	background-color: #f8d7da;
	border-color: #f5c6cb;
  }
  .feedback-icon {
	margin-right: 8px;
  }
  .feedback-text {
	margin: 0;
  }
  
  /* 上传状态样式 */
  .upload-status {
	display: none;
	margin-top: 10px;
	align-items: center;
  }
  .upload-spinner {
	margin-right: 10px;
  }
  
  /* 侧边栏样式 */
  .sidebar {
	position: fixed;
	top: 51px;
	left: 0;
	bottom: 0;
	width: 220px;
	background-color: #f8f9fa;
	border-right: 1px solid #e7e7e7;
	padding-top: 20px;
	z-index: 1000;
  }
  .sidebar ul {
	list-style: none;
	padding: 0;
	margin: 0;
  }
  .sidebar li a {
	display: block;
	padding: 10px 15px;
	color: #333;
	text-decoration: none;
	transition: all 0.3s;
  }
  .sidebar li a:hover {
	background-color: #e7e7e7;
	color: #337ab7;
  }
  .sidebar li a.active {
	background-color: #337ab7;
	color: white;
  }
  .logo_content {
	padding: 15px;
	font-size: 18px;
	font-weight: bold;
	color: #333;
	border-bottom: 1px solid #e7e7e7;
	margin-bottom: 15px;
  }
  
  /* 主内容区域 */
  .main_content {
	margin-left: 220px;
	padding: 20px;
  }
  
  /* 导航栏样式 */
  .navbar-default {
	background-color: #f8f8f8;
	border-color: #e7e7e7;
	border-radius: 0;
	margin-bottom: 0;
  }
  .navbar-default .navbar-brand {
	color: #337ab7;
	font-size: 18px;
	font-weight: bold;
  }
  .navbar-default .navbar-nav > li > a {
	color: #333;
	padding: 15px 10px;
  }
  .navbar-default .navbar-nav > li > a:hover {
	color: #337ab7;
  }
  .navbar-default .navbar-nav > .active > a, 
  .navbar-default .navbar-nav > .active > a:hover, 
  .navbar-default .navbar-nav > .active > a:focus {
	color: #555;
	background-color: #e7e7e7;
  }
  
  /* 上传文件区域样式 */
  .upload-section {
	margin-top: 20px;
  }
  .file-input-group {
	margin-bottom: 15px;
  }
  .file-input-label {
	display: block;
	margin-bottom: 5px;
	font-weight: bold;
  }
  .upload-btn-container {
	text-align: right;
  }
  .upload-btn {
	background-color: #0d6efd;
	color: white;
	border: none;
	padding: 8px 16px;
	border-radius: 4px;
	cursor: pointer;
  }
  .upload-btn:disabled {
	background-color: #cccccc;
	cursor: not-allowed;
  }
  .spinner-border {
	margin-right: 5px;
  }